| 摘要 |
This invention belongs to the branch of laser optics and can be used for marking the inside of a product made out of hard material; when this method and device is used on products made of transparent material, it allows to create a visible, permanent symbol inside the product, that can help to identify the manufacturer. The method for forming identification symbols inside products made of transparent materials includes the concentration of a laser beam, which can not be absorbed by the product material, at a selected point, local disarrangement of the product material at the point of laser beam concentration by affecting it by the impulses of the laser beams and the formation of a marking symbol by changing the place of concentration inside the product. What is new about this invention is that the local disarrangement of the material of the product at the point of concentration is achieved by changing the type of local disarrangement, which is controllable. The transformer of dimensional parameters of the laser beam can change the type of local disarrangement; the transformer is mounted on the way of a laser beam, before the focusing device, which can form at least two laser beams with different dimensional parameters. |
